My sister is better than me.

[DirtyMustachio]

Google
Devotion to golgari

[PapaBudz]

The best thing to do, is just play. She has a 5 month edge on you that no deck is going to fix at the moment. Simply play and learn the ins and outs to the game. And to the sister if your reading this, you BETTER be teaching your brother and not just beating up on him, or else we WILL help him up to and including hooking him up with cards to run you over.

This!!l It's okay to lose, especially if you've just started and if you're sister has more experience. Everybody has to start somewhere.

Take your time to learn how to play the game strategically. Observe your sister and find out why she wins all the time, what plays make or break the game? Post your deck and we can help you on the build and the best way to play.

[Hunteroffire9]

Keep playing, over time if you keep playing and don't quit or give up you will get better. Go to fnms and bigger tourneys to become BETTER

[Dstyle1]

If you want to beat her for sure, there's this deck.
http://tappedout.net/mtg-decks/flash-hulk-14/

I thought he was going to say build tron. :/